JPS6119570Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a push button tuner, in which a coil unit and a circuit case are mounted and fixed on a frame within the width and height of a manual tuning force transmission mechanism, and the circuit case is connected between the transmission mechanism and the coil unit. It is an object of the present invention to provide a push button tuner whose structure can be made smaller and stronger by supporting it with a support plate interposed between the push button tuner and the push button tuner.

Generally, as a push button tuner, when an operating rod supported on a frame is pushed backward and slid, a memorized cam plate is interlocked and slid in the left and right directions, and by regulating their mutual positions, storage, readout, and tuning are performed. There is a model with a thinner structure. According to this structure, a transmission mechanism for transmitting the rotational force of the manual tuning shaft to the cam plate is fixedly installed on a bent plate portion formed on one front side of the frame, and the transmission mechanism is attached to the rear of the transmission mechanism of the frame. A plurality of .mu. tuning coil units are fixedly installed into which a plurality of .mu. tuning cores integrally held on the cam plate are moved in and out, respectively, and a .mu. tuning circuit case is also fixed to the coil unit as required. However, in this case, there was a problem in that the transmission mechanism and the plurality of coil units were troublesome to construct and assemble.

Therefore, the present applicant previously made the above-mentioned transmission mechanism into a unit by Utility Application No. 55-64790 "Push Button Tuner", and also by Utility Application No. 55-8781 "Coil body mounting structure in μ-tuned tuner". Although the above problems were solved by proposing a single coil unit in which each coil unit was attached to a single aluminum die-cast coil case, the following problems still occurred.

In other words, if the circuit case placed at the rear of the transmission mechanism does not fit within the width and height of the transmission mechanism when viewed from the front, the push button tuner will not be able to be accommodated when the push button tuner is stored in the recess of the car's dash board. Since the directional external shape is restricted by the circuit case, the strength of the circuit case itself is inherently low, which also has the disadvantage that the circuit case may be distorted or the terminals may be damaged.

The present invention eliminates the above-mentioned drawbacks, and an embodiment thereof will be described below with reference to the drawings.

FIGS. 1A to 1C are a plan view, a front view, and a side view of one embodiment of the push button tuner according to the present invention, and FIG. 2 is a perspective view of the main parts of the push button tuner. In the figure, the push button tuner 1 has a frame 2, and for example, six operation rods 3 are disposed on the lower plate 2a of the frame 2 so as to be slidable in directions A and B in FIG. A cam plate 4 is disposed so as to be slidable in the C and D directions in the figure in conjunction with the cam plate 3. Cam plate 4
As shown in FIGS. 1A and 2, six cores 5 are fixed to a bent plate portion 4a provided on one side, and a rack 4b is further provided as shown in FIG. 1C. Further, a clutch plate 6 (having a pressing convex portion 6a) is disposed on the upper plate 2b of the frame 2 and is also slidable in the C and D directions.

7 is a manual tuning force transmission unit,
As stated in No. 55-64790 "Oshibutton Chuyuna",
A support plate 9 is generally fixed to the unit main body 8, and an Oldham joint shaft 10, an intermediate shaft 11, a roller shaft 12, which sequentially transmits rotational force from a manual tuning shaft (not shown);
The drum body 13 (pinion 13a is coaxially fixed) is supported, and the rotary arm 14 that supports one end of the roller shaft 12 is pivotally supported to make the whole unit into a unit. One screw hole 8a and one pin hole 8b, 8c are provided for attaching a support plate 41, which will be described later. Transmission unit 7
The lower part of the unit main body 8 is positioned and fixed to the right end of the frame front plate 2c, and at this time, the pinion 13a is attached to the rack 4b of the cam plate 4, as shown in FIG.
The pressed portion 14 of the rotating arm 14 closely opposes the pressing convex portion 6a of the crack plate 6.

21 is a coil unit, which is based on the above-mentioned application.
As described in No. 8781 "Coil body mounting structure in μ-tuned tuner", the AM terminal board 2 is attached to the flat rectangular parallelepiped coil case 22 made of aluminum die-casting.
3 (respectively coil bobbin 24a, rubber ring 24
b, three coil unit 24 consisting of a sleeve core 24c) and three coil bobbins 30 of an FM circuit case 29, which will be described later. The coil unit case 22 is fixed by engaging a lower end engagement convex part with an engagement recess (both not shown) of the frame lower plate 2a, and has six through holes 22a and two pairs of screw holes 22b. It also has one support plate part 22c4 and one hole 22d on the top surface)
are integrally protruded.

The AM terminal board 23 has three coil bobbins 24a implanted in the board body 25, each coil lead connected to a plurality of terminals 26, and has a pair of holes 25a. To attach the terminal board 23, first fit the three sets of sleeve cores 24c and rubber rings 24b into the three holes 22a of the case 22, and then attach the terminal board 23 to each coil bobbin 2.
4a are loosely inserted into the sleeve cores 24c, and the board main body 25 is brought into contact with the rubber ring 24b and positioned. After that, insert a pair of screws 27 into each hole 2.
5a and screwed into the screw hole 22b to firmly tighten and fix the terminal board 23 to the coil case 22.

The FM circuit case 29 covers the side of the thin board 31 (having the terminals 31a) on which the circuit components 32 are implanted with a box-shaped shield case 33, and covers the thick board 35 fixed to the lower end of the shield plate 34 attached to the opposite side. Three coil bobbins 30 are installed, the shield case 33 has one screw hole 33a, and the thick substrate 35 (shield plate 34) has a pair of holes 35a. As for how to attach the circuit case 29, each coil bobbin 30 is attached to the other three of the coil case 22.
The thick substrate 35 is positioned by being loosely inserted into the holes 22a and brought into contact with the side surface of the coil case 22. Thereafter, the circuit case 29 is tightened and fixed to the coil case 22 by inserting a pair of screws 27 into the screw holes 22b through the holes 35a, respectively, in the same manner as in the above case.
At this time, the outer surface of the shield case 33 contacts or closely opposes the support plate portion 22c of the coil case 22.
Each core 5 of the cam plate 4 is connected to the coil bobbin 24a or 30 through each hole 22a of the coil case 22.
It will be inserted as appropriate.

At this time, as shown in FIGS. 1A to 1C, the coil unit 21 and the circuit case 29 are configured to fit within the width and height of the transmission unit 7 (unit main body 8) at approximately the same level when looking at the push button tuner 1 from the front. Therefore, the outer shape of this portion in the longitudinal direction is regulated by the transmission unit 7, resulting in a compact configuration. Therefore, when the push button tuner 1 is stored in a recess of a dash board of an automobile after the support plate 41 (described later) is attached, the storage operation is easy and the circuit case 29 is not damaged.

Reference numeral 41 denotes a support plate, which has a hole 41b in the T-shaped head 41a of the T-shaped plate and a pair of downwardly protruding pin parts 41c on both sides thereof, and a bent plate part 41e at the rear end of the main body plate 41b. It has one hole 41f. For the support plate 41, first place the T-shaped head 41a on the upper surface of the unit main body 8 of the transmission unit 7, fit each pin part 41c into each pin hole 8b, 8c to position it, and then screw 42 through the hole 41b. It is tightened and fixed to the unit main body 8 by screwing it into the screw hole 8a. At this time, the bent plate portion 41e is located along the support plate portion 22c of the coil case 22, and the screw 4
3 into the screw hole 33a of the shield case 33 through the holes 41f and 22d,
The support plate 41 and the shield case 33 are the support plate part 2
2c is tightened and fixed.

Thus, the circuit case 29 is fixed to the coil case 22 at the lower part by the screws 27, and the upper shield case 33 is connected to the support plate part 22c of the coil case 22 via the support plate 41 to which the transmission unit 7 is attached.
This means that it is fixed in two places, top and bottom, resulting in a strong mounting structure that does not wobble. Furthermore, since the upper end of the circuit case 29 is at approximately the same height level as the upper end of the transmission unit 7, the main body plate portion 41 of the support plate 41
f covers the side surface (top surface in FIG. 2) of the shield case 33 to protect the case 33.

Next, the operation of the push button tuner 1 will be briefly explained. First, when the manual tuning shaft is rotated, each part 10 to 13 of the transmission unit 7 is interlocked, and the cam plate 4 is engaged with the pinion 13a and the rack 4b.
slides in the direction of arrow C or D, the core 5 is moved in and out of each coil bobbin 24a or 30, and a desired AM or FM station is tuned by the so-called μ tuning method.

Next, when the desired operating rod 3 is pushed in, its delimiter comes into contact with the corresponding cam portion of the cam plate 4, and the desired position is memorized.

Next, when the cam plate 4 is displaced to another position by the operation of the manual tuning shaft, when the operating rod 3 is pushed in again, the clutch plate 6 first slides in the direction of arrow D, and the pressing effect of the pressing protrusion 6a is The rotating arm 14 rotates to rotate the roller shaft 12 and the drum body 13.
The transmission between them is cut off and the cam plate 4 is brought into a light load state. Therefore, the regulator of the operating rod 3 comes into contact with the corresponding cam portion of the cam plate 4 to easily slide the cam plate 4 to the initial position and read out the desired station.

As described above, according to the push button tuner of the present invention, the manual tuning force transmission mechanism is fixedly installed on one front side of the frame, and the coil unit and the circuit case are housed within the width and height of the transmission mechanism in the front and rear direction. The circuit case is fixed to one side of the frame, and the circuit case is supported by a support plate interposed between the coil unit and the support plate. The structure is supported by two points without wobbling or rattling, and by simply providing a support plate, the structure can be made stable and strong, and performance can be improved. Also, the coil unit and circuit case can be moved forward and backward by the manual tuning force transmission mechanism. Because it fits within the width and height, when this push button tuner is stored, for example, in a recess of a dash board of an automobile, one end of the width and height of the push button tuner can be regulated by the external shape of the manual tuning force transmission mechanism, It has features such as being able to reduce the overall size, and improving reliability because there is no distortion of the circuit case or damage to the terminals when stored.

[Brief explanation of the drawing]

FIGS. 1A to 1C are a plan view, a front view, and a side view of one embodiment of the push button tuner according to the present invention, and FIG. 2 is an exploded perspective view of the main parts of the push button tuner. 1...Push button tuner, 2...Frame, 3...
Operating rod, 4...Cam plate, 4a, 41e...Bending plate portion, 5...Core, 6...Clutch plate, 7...Manual tuning force transmission unit, 8...Unit body, 8
a, 22b, 33a...Screw hole, 21...Coil unit, 22...Coil case, 22a, 22
d, 25a, 35a, 41b, 41f... hole, 2
2c...Support plate part, 23...Terminal board, 24...
Single coil unit, 24a, 30... Coil bobbin, 29... Circuit case, 31, 35... Board, 33... Shield case, 41... Support plate,
41a...T-shaped head, 41d...main body plate.

Claims (1)

[Scope of utility model registration request] By sliding the memorized cam plate and the clutch plate individually in a direction orthogonal to the pushing direction in conjunction with pushing and sliding the operating rod supported by the frame, the core attached to the cam plate can be moved to the circuit case. In a push-button tuner that can be moved in and out of a coil unit having a manual tuning force transmission mechanism, and the transmission force is cut off by bringing the clutch plate into contact with a predetermined part of the manual tuning force transmission mechanism to perform memorization or readout tuning, the transmission mechanism is connected to the frame. The coil unit and the circuit case are fixed to one side of the frame so as to fit within the width and height of the transmission mechanism in the front-rear direction, and the circuit case is fixed to the transmission mechanism. A push button tuner configured to be supported by a support plate interposed between the push button tuner and the push button tuner.